Onion Rings

My husband called these the best onion rings he's ever had. They are really good and super easy. I will say that next time I'll half the recipe...this makes a lot of rings.

1 c. cornstarch
1 c. flour
2 1/2 tsp. baking powder
1 tsp. salt

1 egg
1 c. cold water
Black pepper to taste

Beat together all ingredients. Dip sliced onion rings in batter. Deep fry. (I used vegetable oil.)